Bomb casing



Feb. 9 1.926.

A. M. KING BOMB CASING Filed sept. 19. 1925 Patented Feb. 9, 1926.

ALBERT M.

v11,572,435 Fica.

me, or CASPER, wYoMrNG.

Bom: cAsINe..

Application mea september 19, 1925. serial Ne. 57,452.

To all whom' t may concern? Y Be it known that I, ,ALBERT M. KING, a citizen of the United States', and resident of Cfasper, in thecounty of Natrona and State o I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others sln'lled in the art to which it appertains to make-and use the same. `This invention relates to bombs ,for use in shooting oil wells, 'andmore specifically to a bomb casing provided with a metallic compartment adapted for thereception. ofY lc he explosive' charge, and another compartment. adapted for the reception of time-controlled mechanism which governs the time of explosion of said charge. [It is broadly old,in the art to lprovide time-controlled mechanisms to electrically ignite the charge carried. by a bomb, but there is grave danger in the employmentof such a device, due to the fact that, when such mechanism is actuated, the explosion is instantaneous. In the oil fields man fatali ties have occurred because of 'care ess manipulation of such bombs, whilesettin the timingmechanisms, or-in accidently opping the bomb while the Ajmechanism is to safety position. l

n 1n 57,451 led 4of even date therewith, I disclose al mechanism n which is provided a chain, of instrumentalities .adapted to ex-v plode the charge, f said J chainincluding an element, suchas a slow fuse which, after the timing.A mechanism.v has actuated,

delays the ex losion foraconsiderablevtime. In the use 6 this device the accidental activ vation-of the timing mechanismwill not vresult in the` explosion until afterl the opertiming mechanism,

ator has had an opportunity of disrupting the chain leading Ato the'charge, orhas at least been Igiventhe opportunity to reach a pointof s ety. e x

The primary object of the instant invention is the provision of means properly housing the timing mechanism -and at the same time 4permitting` visual inspection thereof by the operator -so that he maybe instantly advised when the said mechanism is inadvertently actuated to light the fuse.' Another object of the invention is the provision of a water-proof housing for such which housing is ofa Wyoming, have invented certain new and `useful Improvements 1n Bomb Casmgs; and

set

companion application` Ser. No..

are appliedv to the endsl of the material which is not only transparent, so as to permit a viewof said mechanism at all times, but which, in the event of inadvertent' actuation of the said mechanism, may also be easily broken to give ready access to the fuse so that the latter may be quickly ruptured whereby to destroy the chain of instrumentalities leading to' the explosion of the charge.

Other objects of the invention will' be made apparent in the following specifications, when taken in connection with the drawings forming a part thereof.

In said drawings; Fig. 1, is-a verticalsection taken through a bomb equipped Awith my invention, and,

1g. 2 1s a transverse section of said bomb,

on the line 22 of Fig. 1.

Now referring specifically to the draw'- ings, l indicates a metallic casing containing the explosive charge 2. A slow-fuse 3, leads into the chamber 1, and carries a percussion ca p ,4 at its end, lin proximity to the dynavmlte 2, or otherexplosive constituting the charge. The chamber 1 is somewhatenlarged at its upper periphery, and is provided with an annular groove 5, concentric with the opening in the chamber. A. cylinder 6, of glass or other transparent frangible material,is formed so that its lower periphery fits snugly into the groove 5, a lead packing .being preferably positioned below the end of the cylinder 6 to effect a water-tight joint. f cap said cylinder 6, a

groove 8 ,being cut into the 'lower surface of eriphery of thel cylinder' 6, as will be understood..

The upper surface of the enlarged porreceive tie-bolts 9 which extend through apertures in the cap 7 `and into said sockets,

lboth ends of-said bolts being screw-threaded.

After-the bolts are; screwed into said sockets,v

andthe ca 7 so applied that the apertures therein em race the bolts 9, locking nuts 9 bolts and tightly screwed down onto the cap 7, com pressing the lead packings in the grooves in the cap and caslng and therebyl `eli'ecting water-tight joints, and also firmly securing the cylinder 6 Vin position. y

The timing mechanism controls a chain is provided for the upper end of sald cap and adapted to e *also -receive a lead packing andv the 'upper lio of instrumentalities which operates to explode the charge, consisting of one or more fulminates carried by the upper portion of the fuse, and which are exploded by the. timing mechanism-to ignite the fuse; the fuse itself, and the lpercussion cap 4 which explodes to set off the charge 2.

As clearly and specifically set forth in my companion application heretofore referred chamber 1, and the to, the timing mechanism consists ofa timepiece 10, to the outside of which is secured a semi-cylindrical shell 11. A shelf 12 extends across the shell 11,as does also a sup2 port 13, and a spring-actuated swinging arm 10 is pivotally mounted on a iixed pin 14 extending between the shelf 12 and the support 13. The fuse 3 carries one or more fulminates at its upper end, which end is held by the shell 11 so as to present .the fulminate for contact by the head ljof the swinging arm 10. A detent 16 is adapted to restrain the swinging arm 10 in set position, and thel alarm shaft 17 of the timepiece carries a blade 18 which is provided with a vertically-extending slot adapted to receive the extreme end 19 of the detent,

and to prevent movement of the latter' to releasing position while the alarm shaft is fixed in one position. rlhe blade 18 also carries a cam 2O at its lower edge, which cam, during normal rotation of the shaft 17, while the alarm is being sounded, contacts the detent 16 and moves it to releasing Aposition, thereby allowing the spring-actuated head 15 to contact the fulminate on the fuse, and set into operation the chain of instru mentalities leading to the explosion of the charge.

It is to be noted that the outer periphery of the shell 1l makes a neat fit with the inner surface 'bf the cylinder 6. In actual practice the clock controls are all Iset to cause ignition of the fuse at a predetermined time, the end 19 of the detent 16 resting in the slot'in the blade 18, whereby the ignition mechanism is at safetyf The device is then assembled as indicated in Fig. 1, the cap 4 being first lowered into the chamber containing the explosive charge, as great a lengthl of the fuse 3 as desired being provided bencath the clock-piece 10 and the explosive. The timing mechanism is pushed downwardly within the cylinder until the lower edge of the clock 10 contacts the inner periphery of the casing 1,- and the cap 7 is then applied in position as above set forth; Before the cap 7 is applied, in case of inadvertent actuation of the timing mechanism resulting in ignition of the fuse 3,v the whole device, including the cylinder 6, may be moved from the proximity of the fuse 3 disrupted.' After the cap 7 is applied the operator may at all times view the mechanism and fuse through the transparent cylinder 6, and, in case of inadvertent actuation of the igniter, may break the glass cylinder 6 and withdraw or disrupt the fuse long before the percussion cap 4 is exploded. f

The device is provided with a bail 21 for convenience in handling after assembly.

From the foregoing 1t will be-noted that the utilization of the device described greatly minimizes the danger heretofore incident to the handling of bombs of this character, since the transparent casing not only permits the operator at all times to satisfy himself that the fuse is not lighted, but also affords him ready opportunity to disrupt the latter long before the dangerous explosion can take place. l

Various modifications of the structure herein-depicted may be suggested to those skilled in the art. For instance instead of a cylinder-6 made entirely of transparent material a frangible transparent 'window might be provided in the caslng for the timing mechanism, or a transparent Window which could be opened to permit access to the fuse. Such structures fall within the province of my invention, as do all other embodiments falling fairly within the scope ofthe appended claims.

What I claim is:

1.v A housing for bombs and igniters, comprisng a metallic casing for the ex losive charge, and a transparent casing or the igniter.

` 2. A housing for bombs and igniters. comprising a metallic housing for the explosive charge, and a frangible transparent casing for the igniter.

3. A composite casing for bombs of the class including an explosive charge and an automatic igniter, comprising a metallic casing for the charge, and a transparent casing for the igniter, and means for securing said transparenty casing to said metallic casing.

. 4. A composite casing for bombs of the class including an explosive charge, an automatic igniter, and a slow-fuse leading from the igniter to the charge, com rising a ALBERT M. KING.

vmetallic casing for. the charge, an' a casing 

